2015.12.29~2015.12.30 Real Title Review! --HTML5 Academy

2015.12.29~2015.12.30 Real Title Review! --HTML5 Academy

Eat, can solve hunger, provide physical function. Practicing is like eating, being strong, improving your programming skills, and finding the best way to learn programming skills! Can't stop eating, practice also can't stop Oh!

HTML5 Real title "2015.12.29" topic

Learn JavaScript or apply JavaScript for scripting, "variables" that must be learned to use. What is a variable? What's the effect? OK, we have a little Ann, try experience this topic "HTML5 real Problem" 2015.12.29 "title" and "HTML5 true title" 2015.12.24 "Answer Resolution"! You'll find some features of the "variable" in JavaScript! Each variable plays a different role, and at different times, the variable may be in the same state.

HTML5 Real title "2015.12.30" topic

I believe you, through the previous exercise, have been aware of the "variable" has a preliminary understanding. In other development languages, there is the concept of global variables and local variables. There is no doubt that the concept of global variables and local variables exists in JavaScript. What is a global variable and what is a local variable? Do you know how to differentiate global variables from local variables in JavaScript? If you still do not understand, then take a look at this problem! "HTML5 Real title" 2015.12.30 "title" and "HTML5 true title" 2015.12.29 "Answer Resolution"! With this question, do you find that the same variable name results in a different result. Then why is that? The reason for this is that each variable will have a scope. The scope makes the variable have a scope, thus having the argument of global variable and local variable. Is there a block-level scope in other languages? Does that exist in our JavaScript? If you go back and look at the previous question, you will have the answer!

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2015.12.29~2015.12.30 Real Title Review! --HTML5 Academy